M. Wang, Z. Z. Yang, W. H. Li, L. Gu and Y. Yu (2016) Superior Sodium Storage in 3D Interconnected Nitrogen and Oxygen Dual-Doped Carbon Network. Journal/Small 12 2559-2566. [In English]
Web link: http://dx.doi.org/10.1002/smll.201600101
Keywords: ,LITHIUM-ION BATTERIES, CAPACITY ANODE MATERIALS, BACTERIAL-CELLULOSE, ELECTROCHEMICAL PERFORMANCE, ELECTRODE MATERIAL, MESOPOROUS CARBON, FACILE SYNTHESIS, RATE CAPABILITY, ENERGY-STORAGE, LOW-COST

Abstract: Carbonaceous materials have attracted immense interest as anode materials for Na-ion batteries (NIBs) because of their good chemical, thermal stabilities, as well as high Na-storage capacity. However, the carbonaceous materials as anodes for NIBs still suffer from the lower rate capability and poor cycle life. An N, O-dual doped carbon (denoted as NOC) network is designed and synthesized, which is greatly favorable for sodium storage. It exhibits high specific capacity and ultralong cycling stability, delivering a capacity of 545 mAh g(-1) at 100 mA g(-1) after 100 cycles and retaining a capacity of 240 mAh g(-1) at 2 A g(-1) after 2000 cycles. The NOC composite with 3D well-defined porosity and N, O-dual doped induces active sites, contributing to the enhanced sodium storage. In addition, the NOC is synthesized through a facile solution process, which can be easily extended to the preparation of many other N, O-dual doped carbonaceous materials for wide applications in catalysis, energy storage, and solar cells.